<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
    private $_id;

    /**
	 * Authenticates a user.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
        $user = Usuario::model()->find('username=?',array($this->username));
		
		if($user===null) {
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		} else if ($this->password !== $user->password) {
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		} else {
			
			$this->_id=$user->getPrimaryKey();
			Yii::app()->getSession()->add('usuario', $user);
			$this->username=$user->username;
			$this->errorCode=self::ERROR_NONE;
		}
			
		return !$this->errorCode;
    }
}